/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package Control;

import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringReader;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import javax.xml.bind.JAXBContext;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Result;
import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

/**
 *
 * @author ANTV60287
 */
public class Controller extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        {
            JAXBContext context = null;
            try {
                String action = request.getParameter("action");
                String realPath = getServletContext().getRealPath("/");
                if (action.equals("Register")) {
                    String Username = request.getParameter("Username");
                    String Password = request.getParameter("Password");
                    String FullName = request.getParameter("FullName");
                    String Address = request.getParameter("Address");
                    String Email = request.getParameter("Email");
                    String Telephone = request.getParameter("Telephone");
                    UserObject uo = new UserObject();
                    uo.setAddress(Address);
                    uo.setEmail(Email);
                    uo.setFullName(FullName);
                    uo.setPassword(Password);
                    uo.setTelephone(Telephone);
                    uo.setUsername(Username);
                    uo.Register(Username, Password, FullName, Address, Email, Telephone);
                    request.getRequestDispatcher("index.jsp").forward(request, response);
                } else if (action.equals("CheckUsername")) {
                    String username = request.getParameter("username");
                } else if (action.equals("CheckOut")) {
                    String xmlString = request.getParameter("xmlContent");
                    xmlString = new String(xmlString.getBytes("8859_1"), "UTF8");
                    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
                    DocumentBuilder db = dbf.newDocumentBuilder();
                    Document doc = db.parse(new InputSource(new StringReader(xmlString)));
                    TransformerFactory tff = TransformerFactory.newInstance();
                    Transformer trans = tff.newTransformer();
                    trans.setOutputProperty(OutputKeys.INDENT, "yes");
                    Source src = new DOMSource(doc);
                    String path = getServletContext().getRealPath("/") + "XML/cart.xml";
                    Result rs = new StreamResult(path);
                    trans.transform(src, rs);
                } else if (action.equals("Login")) {
                    String Username = request.getParameter("Txt-Username");
                    String Password = request.getParameter("Txt-Password");
                    UserObject uo = new UserObject();
                    uo = UserObject.checkLogin(Username, Password);
                    if (uo != null) {
                        HttpSession session = request.getSession();
                        session.setAttribute("USER", uo);
                        response.sendRedirect("index.jsp");
                    } else {
                        request.getRequestDispatcher("index.jsp").forward(request, response);
                    }

//                } else if(action.equals("Order")){
//                    String [] productname = request.getParameterValues("name");
//                    String [] productprice = request.getParameterValues("price");
//                    String total = request.getParameter("total");
//                    String email = request.getParameter("email");
//                    ListCart list = new ListCart();
//                    Cart cart;
//                    UserObject uo = new UserObject();
//
//                    for (int i = 0; i< productname.length; i ++){
//                        cart = new Cart();
//                        cart.setProductName(productname[i]);
//                        cart.setEmail(email);
//                        cart.setTotal(Double.parseDouble(total));
//                        cart.setProductPrice(Double.parseDouble(productprice[i]));
//                        list.getCart().add(cart);
//                        uo.InsertCart(email, productname[i], Double.parseDouble(productprice[i]), Double.parseDouble(total));
//                    }
//                    JAXBContext ctx = JAXBContext.newInstance(ListCart.class);
//                    Marshaller mar = ctx.createMarshaller();
//                    mar.setProperty(Marshaller.JAXB_ENCODING, "UTF-8");
//                    mar.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
//                    mar.marshal(list, new File(realPath + "XML/customerOrder.xml"));
//                    File xmlfile = new File(realPath+"XML\\customerOrder.xml");
//                    File xslfile = new File(realPath+"XSL\\customerOrder.xsl");
//                    exportXMLtoPDF e = new exportXMLtoPDF();
//                    e.generateXSLFO(xmlfile, xslfile);
//                    e.generatePDF();
//                }
//
//            } catch (JAXBException ex) {
//                Logger.getLogger(Controller.class.getName()).log(Level.SEVERE, null, ex);
                }
            } catch (SAXException ex) {
                Logger.getLogger(Controller.class.getName()).log(Level.SEVERE, null, ex);
            } catch (TransformerConfigurationException ex) {
                Logger.getLogger(Controller.class.getName()).log(Level.SEVERE, null, ex);
            } catch (TransformerException ex) {
                Logger.getLogger(Controller.class.getName()).log(Level.SEVERE, null, ex);
            } catch (ParserConfigurationException ex) {
                Logger.getLogger(Controller.class.getName()).log(Level.SEVERE, null, ex);
            } finally {
                out.close();
            }
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
